FAS 604
Sight Adjustments
Clockwise down.
Clockwise right.
Trigger Adjustments
Takeup Length and Trigger
Position
Adjust with allen key (#2).
First Stage Trigger Travel
Adjust with allen key (#3).
Second Stage Trigger Travel
Adjust with allen key (#4).
Trigger Weight
Turn allen key (#1) clockwise to increase weight.
Trigger Stop
Using thin allen wrench or pin through hole, trigger stop behind trigger may be screwed in or out (as shown in diagram).
For newer models, turn allen key set in trigger shoe clockwise until trigger will not release, then back off one quarter turn (not shown in diagram).